CN103053383A

CN103053383A - Water-air coupling drip irrigation system

Info

Publication number: CN103053383A
Application number: CN2013100012042A
Authority: CN
Inventors: 张振华; 杨润亚; 刘贤赵
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-01-04
Filing date: 2013-01-04
Publication date: 2013-04-24

Abstract

The invention discloses a water-air coupling drip irrigation system. The water-air coupling drip irrigation system comprises an air compressor, an air storage tank, a multi-phase blade type mixed delivery pump, a Venturi jet device and a drip irrigation pipeline system, air mixing is completed in a parallel branch pipeline, rotation of an impeller of the multi-phase blade type mixed delivery pump acts on delivered fluids, the impeller rotates to enable the air to be uniformly mixed into water of the drip irrigation pipeline system in a tiny bubble form, and the air is uniformly delivered into soil in plant root areas along with water flow. The water-air coupling drip irrigation system adjusts air mixing quantity by means of changes of the air storage tank pressure, is wide in air mixing proportion range, flexible and convenient to adjust, simple in structure and convenient to use, manage and maintain, and is capable of achieving common underground irrigation and water-air coupling drip irrigation by means of switch control.

Description

A kind of aqueous vapor coupling drip irrigation system

Technical field

The present invention relates to agricultural irrigation technology, is a kind of aqueous vapor coupling drip irrigation system specifically.

Background technology

Along with the appearance of global water resources crisis, as the water resources consumption rich and influential family, the water use efficiency that how to improve agricultural irrigation is the hot issue that present world agriculture is irrigated the field.Which kind of irrigation technique no matter, the process of moistening soil all shows as water drive for the air in the soil pore space, thereby irrigation practice inevitably causes waning of crop root zone soil air, and plant growth has been produced adverse effect.Drip irrigation is present state-of-the-art irrigation technique in the world, because its moistening segment space of the crop root zone soil body, compare in the drip irrigation crop root zone air capacity with flood irrigation slightly many, but studies show that according to relevant drip irrigation still can cause the oxygen of crop root to be coerced.How solving the air minimizing, the oxygen that occur in the middle of the irrigation process and coerce phenomenon, is the bottleneck that restriction further improves the field irrigation resultant effect.

Utilize underground drip irrigation system that aerated water or aeration liquid manure fluid-mixing are transported to the plant roots district, can effectively improve water, fertilizer, gas, the thermal environment of plant rhizosphere, reach and improve the liquid manure utilization ratio, increase economic flow rate and improve the purpose of gathering in the crops quality.How air being incorporated in the middle of the water of droping irrigating pipe system equably with the form of micro-bubble, is the key issue concerning the method success or failure.The external Mazzei venturi syringe of Mazzei Injector company production that adopts is finished mixing of air more at present, the operation principle of Mazzei venturi syringe is the same with common venturi, follow Bernoulli's theorem: when the current of certain pressure enter into venturi from the venturi water inlet, because diminishing, throat radius cause water velocity to become large, the corresponding reduction of the pressure of water, when pressure is lower than external atmosphere pressure, air will be sucked into to be incorporated in the middle of the current by air inlet, when gas-vapor mix body at a high speed flows to the venturi port of export from throat, because becoming, the pipeline radius cause greatly flow rate of water flow to reduce, kinetic transformation is that potential energy increases pressure, continuation flows into trunk line with the form of pressure flow body, through entering to be seeped in the middle of the soil finally by water dropper after defeated the moving.Mazzei venturi syringe is a kind of patented product, causes air and water evenly to be mixed in the pipeline by specific structure, the situation of aqueous vapor layering can not occur or produce air pocket, keeps the steady of pipeline fluid movement and pressure.The ratio of Mazzei venturi syringe aeration (volume ratio of aqueous vapor in the pipeline) is limited, maintains about 12%.

Summary of the invention

The objective of the invention is to overcome the deficiency of above-mentioned prior art, and a kind of aqueous vapor coupling drip irrigation system is provided, mainly solved the temporary transient anoxic of root system of plant that existing common underground drip irrigation causes and adopt Mazzei venturi syringe to finish the problems such as equipment manufacturing cost height, aeration ratio be limited of mixing of air when irrigating.

Technical scheme of the present invention is: a kind of aqueous vapor coupling drip irrigation system, and its special character is to be comprised of air compressor, air accumulator, watering, heterogeneous vane type mixing pump, delivery main, venturi ejector, bypass line, underground drip irrigation arm and hollow billet; Described air compressor and air accumulator are connected, and described air accumulator is with pressure regulator, and air accumulator is connected by the air inlet with valvular steam hose and venturi ejector; Described venturi ejector and heterogeneous vane type mixing pump are series on the bypass line, and the venturi ejector is positioned at before the heterogeneous vane type mixing pump; Described bypass line is connected in parallel on the delivery main, delivery main in delivery main section in parallel with bypass line is established the first switch, be provided with second switch and the 3rd switch in bypass line, second switch is positioned at before the venturi ejector, and the 3rd switch is positioned at after the heterogeneous vane type mixing pump; Described delivery main one end and watering are connected, and the other end and underground drip irrigation arm are connected, and underground drip irrigation arm and hollow billet are connected.

Compared with the prior art a kind of aqueous vapor coupling drip irrigation system of the present invention has outstanding substantive distinguishing features and marked improvement, 1, being incorporated in the parallel branch pipeline of air finished, utilize the heterogeneous vane type mixing pump vane rotary of back to carrying the fluid acting, carry out Conversion of Energy and transmission, reach the purpose of pumping biphase gas and liquid flow, make gas-liquid mixed by pressurization in the pump simultaneously, wheel rotation becomes microbubble with the air pocket fragmentation, guarantee that air is incorporated in the middle of the water of droping irrigating pipe system equably with the form of micro-bubble, along with current are transported in the plant root region soil equably; 2, the adjustable air accumulator of Venturi air inlet and pressure is connected, can regulate the air incorporation by the variation of air accumulator pressure, compare with the mode of direct suction outside air, native system air mixed ratio is higher and flexible adjustment convenient, can regulate the conditions of demand of oxygen in various seasons according to crop, to satisfy the oxygen demand of crop; 3, this system architecture is simple, and use and management and maintenance are convenient, saves the labour, simultaneously can fertilizer is water-soluble, carry out manuring irrigation, and improve the utilization ratio of fertilizer, minimizing is to the pollution of soil and groundwater; 4, this system is transported to the plant roots district to aerated water or aeration liquid manure fluid-mixing, can effectively improve water, fertilizer, gas, the thermal environment of plant rhizosphere, keep the normal metabolism of root system and respiratory function, growing of promotion and coordination plant ground and under ground portion is a kind of water saving, economize fertile, efficient Novel irrigation technology.

Description of drawings:

Fig. 1 is structural representation of the present invention.

Embodiment

For Comprehension and Implementation better, provide specific embodiment below in conjunction with accompanying drawing and describe the present invention in detail.

Embodiment 1, referring to Fig. 1, take aqueous vapor coupling underground drip irrigation as example, be connected with air compressor 1 with pressure regulator 9 air accumulators 2, again with air accumulator 2 by being connected with the steam hose 7 of valve 6 and the air inlet 15 of venturi ejector 10, venturi ejector 10 and heterogeneous vane type mixing pump 4 are series on the bypass line 8, venturi ejector 10 is positioned at before the heterogeneous vane type mixing pump 4, bypass line 8 is connected in parallel on the delivery main 5, with the delivery main 5 of bypass line 8 sections in parallel the first switch 12 is installed at delivery main 5, second switch 11 and the 3rd switch 16 are installed on the bypass line 8, second switch 11 is positioned at before the venturi ejector 10, the 3rd switch 16 is positioned at after the heterogeneous vane type mixing pump 4, again delivery main 5 one ends and watering 3 are connected, the other end and underground drip irrigation arm 13 are connected, and at last underground drip irrigation arm 13 and hollow billet 14 are connected;

Close first the first switch 12 and valve 6 before irrigating, second switch 11 and the 3rd switch 16 are opened, the working pressure range of pressure regulator 9 is set according to actual needs, open air compressor 1, behind the pressure arrival setting range Deng air accumulator 2, begin to utilize watering 3 to supply water, wait to start heterogeneous vane type mixing pump 4 in the pipeline behind the waterflow stabilization, and open valve 6, aqueous vapor coupling underground drip irrigation begins to carry out.

Embodiment 2, and referring to Fig. 1, take common underground drip irrigation as example, system closes first second switch 11 and the 3rd switch 16 with the annexation of embodiment 1 before irrigating, and the first switch 12 is opened, and utilizes watering 3 to supply water and can realize common underground drip irrigation.

Claims

1. an aqueous vapor coupling drip irrigation system is characterized in that being comprised of air compressor (1), air accumulator (2), watering (3), heterogeneous vane type mixing pump (4), delivery main (5), venturi ejector (10), bypass line (8), underground drip irrigation arm (13) and hollow billet (14); Described air compressor (1) and air accumulator (2) are connected, and described air accumulator (2) is with pressure regulator (9), and air accumulator (2) is by being connected with the steam hose (7) of valve (6) and the air inlet (15) of venturi ejector (10); Described venturi ejector (10) is series on the bypass line (8) with heterogeneous vane type mixing pump (4), and venturi ejector (10) is positioned at heterogeneous vane type mixing pump (4) before; Described bypass line (8) is connected in parallel on the delivery main (5), delivery main (5) in delivery main (5) section in parallel with bypass line (8) is established the first switch (12), be provided with second switch (11) and the 3rd switch (16) in bypass line (8), second switch (11) is positioned at venturi ejector (10) before, and the 3rd switch (16) is positioned at heterogeneous vane type mixing pump (4) afterwards; Described delivery main (5) one ends and watering (3) are connected, and the other end and underground drip irrigation arm (13) are connected, and underground drip irrigation arm (13) is connected with hollow billet (14).